Qt software development framework

2011-02-18 Lorenz Haas <lykurg@gmail.com> * Update dtl-cpp: version 1.12 * Fixed bug Bug #17399: Formatting mess code up when folded * Update year of the copyright notice * Add support for Qt Creator 2.1.0 2010-07-27 Lorenz Haas <lykurg@gmail.com> * Add support for Qt Creator 2.0.0 * Release 0.5.1 2010-07-27 Lorenz Haas <lykurg@gmail.com> * Add diff-support: dtl-cpp (http://code.google.com/p/dtl-cpp/) * Fixed bug #17376: Code missing after formatting * Release 0.5 2010-04-29 Lorenz Haas <lykurg@gmail.com> * Code optimization: The formatter is only updated if the preferences had changed. * Improvement: Now, only lines which have been altered are changed. Thus the "red border" of creator works as expected. * Release 0.4 2010-03-20 Lorenz Haas <lykurg@gmail.com> * Fixed bug #16977: No shortcut key displayed in Edit menu * Fixed bug #16978: Broken Undo Framework * Small settings Gui enhancement * Add constants for Artistic Style options * Add default setup for Artistic Style * Release 0.3 2010-03-19 Lorenz Haas <lykurg@gmail.com> * Cursor stays now at the same row after formating. * New settings page * Binaries for Linux SDK and Windows SDK (32 bit) * Release 0.2 2010-03-17 Lorenz Haas <lykurg@gmail.com> * Initial release (0.1)

This document contains a brief list of the most important OS/2-specific changes in the Qt library from release to release. CHANGES 4.6.2 (14-05-2010) Improvements: - general: Updated Qt codebase to version 4.6.2 (see the changes-4.6.2 file for details). Note that this version is binary incompatible with the previous version (see README.OS2 for more information). - general: Implemented support for the OS/2 platform in the webkit module. The webkit module is used in many complex web-based applications such as web browsers to implement the JavaScript support. Note that the script module uses the JavaScript implementation from the WebKit project too and it was also ported to OS/2. The webkit module is always present in the official Qt build but is disabled by defautl in the custom builds due to big compilation times. - general: Use declspec(dllexport) on OS/2 to significantly reduce the number of exports in generated DLLs. This mode is on by default which reduces the number of exported symbols by 90-100% in Qt DLLs and makes it not necessary to split the QtGui DLL in 3 parts in debug mode. The old method which causes all public symbols to be exported is still available using the "export_all" CONFIG option (see README.OS2 for details). - general: Provide the "doc" WPI archive that contains the Qt reference documentation. - corelib: Implemented native (XWP-based) file system watcher for OS/2 that does not eat CPU (which is best noticed in file dialogs showing directories containing hundreds of files. Requires XWorkplace to be installed. - corelib: Implemented deriving the defaut locale from the process country code if LANG is not set and integration with the system locale object (System Setup -> Country Palette). See the QT_PM_NO_SYSTEM_LOCALE description in README.OS2 for details. - gui: Implemented printing support through CUPS. Refer to section "PRINTING SUPPORT" in README.OS2 for details. - gui: Implemented painting in widgets using DIVE (direct interface video extensions). Using DIVE gives a significant graphical performance boost, up to 100% in BLIT mode and 130% in FBSWM mode, depending on the combination of the graphics hardware, video driver and the current screen mode. See the QT_PM_DIVE and QT_PM_NO_DIVE description in README.OS2 for more details. - gui: Improved the painting speed when not using DIVE. The performance boost varies from 30% to 200% (e.g. 3 times faster), depending on the combination of the graphics hardware, video driver and the current screen mode. - gui: Enabled MMX/SSE support (on by default) to speed up graphical operations by a couple of percents. - gui: Enabled accessibility support on OS/2. Note that in order to use the accessibility functions, a QAccessibleBridge plugin for the corresponding accessibility device is necessary but none of them exist at the present time. - gui: Use native file icons in standard Qt file dialogs. - assistant: Enabled the help module and made the Qt Assistant tool build on OS/2. Also enabled help and assistant examples and demos. - demos: Enabled the browser demo application that makes use of the webkit module. - demos: Enabled the qtdemo example that demonstrates all Qt features and acts as a launcher for other example and demo applications. - gnumake/os2-g++: Switch the compiler to using the i486 instruciton set for code generation. This gives around 3% of the performance boost when painting. As a drawback, the code will no longer run on i386 PCs but it is assumed that it does not make sense to use Qt4 on these computers. Fixes: - general: Fixed: Building Qt applications with the "dev" WPI archive would fail due to extra spaces in the output object file names. - corelib: Fixed: Regular files were treated as sequential streams which made the seek functionality unavailable. This in particular affected Qt Designer that didn't expect sequential streams when reading .ui files and refused to load files bigger than 8192 bytes as a result. - corelib: Make sure the hardware error popup dialogs do not appear when opening the standard Qt file dialog and selecting a removable drive with no media inserted even with AUTOFAIL=YES in CONFIG.SYS - corelib: QProcess: Fixed: Data could not be successfully read or written to the standard streams of the started process in 'highmem' link mode (which is on by default since 4.5.1 GA), as well as in normal link mode in some situations. - corelib: Fixed QProcess::startDetached() which would not work in 'highmem' mode. - corelib: QProcess: Fixed: Having stderr of a started child process redirected to a pipe (which is the default) would indirectly cause an impossibility to write anything to its stdin. - corelib: QProcess: Get rid of the unexpected "DosQueryNPipeSemState returned 87" warning. - corelib: QFileSystemWatcher: In the fall-back polling watcher, increased the sleep time between checks of all watched files from 1 second to 3 seconds to decrease the CPU load on big sets of watched files. Also, replaced the sleep between checking individual items with the yield call as it doesn't give significant improvement but just causes more CPU cycles to be spent between each check. - corelib: Always return true from QFileInfo::isRoot()/isDir() for paths referring to root directories of drives with no media and always return false from QFileInfo::exists() for them. Also, don't lstat() on such paths since they are definitely not symlinks. This improves the file dialog appearance and behavior for removable drives. - corelib: Protect against the frozen system when QSocketNotifier is given an unsupported socket (for example, an OS/2 file handle). There is still 100% CPU load in this case, but the application can be at least closed using normal means. - corelib: Sockets: Fixed: "has data to read" socket notifications would be sometimes delivered with a delay depending on the frequency of timers which could significantly slow down network data transfer. - corelib: QTemporaryFile: Fixed: Files were opened in O_TEXT mode which caused unexpected LF <-> CRLF translation. In particular, this broke QNetworkDiskCache functionality (seen in e.g. demos/browser as missing images and CSS sheets when read from cache). - corelib: Fixed: Clear FPU CW in qdtoa() to avoid the floating point exception in various scenarios [patch by rudi]. - gui: Fixed assertion in QVector::at() at startup. - gui: Fixed assertion at #1125 in qwidget.cpp (due to an attempt to re-instantiate QDesktopWidget during application termination). - gui: Select the correct icon for the drive letter in standard file dialogs depending on the drive type (floppy, hard disk etc) [patch by rudi]. - gui: Fixed crash in PMMERGE during resize & move of the top level window with the complex layout (caused by reading outside the bitmap data). - gui: Fixed: Never add tooltip windows to the top-level window list and only do so for splash windows if they have the Qt::WindowTitleHint flag set. - 3rdparty: Added OS/2 support to clucene used by the help module for fulltext search in help files [based on the patch by rudi]. - configure.cmd: Fixed: QT_BUILD_KEY (and QLibraryInfo::buildKey()) would always contain "release", even in debug builds, which caused debug builds to load the release plugins and refuse the debug ones. - qmake/os2-g++: Use -Wl, to pass the object list response file to the linker as is instead of the expanded list of objects (this overcomes the 64KB limitation of the total process command line length in OS/2).

This document contains a brief list of the most important OS/2-specific changes in the Qt library from release to release. CHANGES 4.5.1 GA (05-02-2010) Improvements: - general: Switched the compiler to the GCC 4.4.2 build provided by Paul Smeldey. This gives better standard conformance, better code optimization and provides more compact DLLs and EXEs whose size is greater than ~1M. - corelib: QSettings: Use IniFormat (plain INI files) when NativeFormat is requested instead of the Open32 registry which is known to be unstable and can be easily corrupted. The old behavior may be restored using the QT_PM_REGISTRY environment variable. - corelib: Use UniStrcoll for QString::localeAwareCompare() for locale-aware comparison of NLS strings. - gui: Implemented full Direct Manipulation (Drag And Drop) support. This includes dragging text, URLs and files between PM and Qt applications, dragging any MIME data across Qt applications, setting custom drag pointer pixmaps, painting in widgets while dragging. - gui: Implemented session management with the QSessionManager class. - gui: Fully implemented the QDesktopServices class. - gui: Added support for numpad keys and for some common multimedia keys recognized by eCS (volume, home, search, favorites). - gui: QCursor: Added missing cursor shapes and implemented support for custom cursor shapes. - gui: Implemented QFontDatabase::addApplicationFont()/removeApplicationFont() and friends. - gui: Implemented proper generation of possible key and modifier combinations for a given key event. This in particular enables Ctrl+<letter> shortcuts for non-Latin languages and also makes Ctrl+<letter>, Alt+<letter> and similar shortcuts language-neutral. - gui: QWidget: When setting the parent, take the parent's resolve masks to make sure attributes imposed by the user on the parent won't be overriden byv the natural palette for this widget if it differs from QApplication::palette() [vendor bug]. - gui: Use a normal border for top-level Tool widgets since the thin one is too thin and cannot be resized. - gui: Implemented delivering of QEvent::NonClientAreaMouse* events to top-level widgets. This enables undocked dock widgets to be docked back by a double click on the title bar and also by moving over the dock areas. - plugins: Enabled the sqlite3 plugin which makes the sql module (and applications depending on it) actually usable. - tools: Enabled the Qt Designer application. - tools: Enabled the following toos: pixeltool, q3toq4, xmplatterns. - qmake/os2-g++: Recognize the "map" option in the CONFIG variable that allows to turn the generation of .map files on and off. The option is set by default. - qmake/os2-g++: Recognize the "highmem" option in the CONFIG variable that allows to enabled memory support in LIBC for genereated DLLs and executables. The option is set by default. Fixes: - corelib: Created wrappers for all Win* and Gpi* calls that restore the FPU Control Word to what C/C++ programs expect. This fixes crashes in various Qt applications (e.g. mp3diags) due to SIGFPE. - corelib: QLibraryInfo: Fixed: qt.conf would not have been loaded if a component path was requested before QCoreApplication instance creation. - corelib: QLibraryInfo: Changed default "Settings" path to %ETC%/xdg. Also use %ETC%/qtsys.conf as the system-wide qt.conf instead of %ETC%/qt/qtsys.conf. - corelib: QFSFileEngine: Fixed: On OS/2, trailing spaces in file names are ignored ("readme " = "readme") but kLIBC doesn't handle this well so strip them before passing to LIBC APIs. - corelib: QFile::copy(): Use DosCopy() instead of read/write. - corelib: Fixed: QProcess::startDetached() would either crash or fail to start a process. - corelib: Fixed: QFileInfo::isExecutable() would return true for all files on local OS/2 file systems. - gui: Fixed: Popups shown when another application is active were not controllable with keyboard and didn't close on an outside mouse click. - gui: Fixed: Visible title bar and frame of the top-level window after switching to fullscreen. - gui: Fixed: Wrong widget-relative mouse position in mouse events. This fixes problems with dragging widget splitters (separators) in applications using dock widgets. - gui: Fixed: QEvent::Enter/Leave events were delivered incorrectly if the alien child widget belonging to a native parent intersected with a native child of this parent (this in particular caused extended tool bars to immediately un-extend once the mouse moves over the extended part). - gui: Fixed: Mouse press events replayed after closing the popup by clicking outside it had incorrect coordinates. This resulted into various kinds of misbehavior including spatial text selection in QTextEdit widgets after closing popups by clicking inside these widgets. - gui: Fixed: The default application icon embedded into the executable was not actually used as the default window icon for top-level widgets. - qmake/os2-g++: Do not use EXEPACK tool on static libraries. - qmake: Several fixes to make install targets work correctly.

QT-3 toolkit for XFree86/2 [N.d.R.: require installable only manually prerequisites for the EMX development environment] ==========================================================================